<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>:default</title>
		<style>
			.select1 option:default {
				color: red;
			}
			p input:default + label::after {
				content: "（推荐	）";
			}
		</style>
	</head>
	<body>
		<h2>默认选项伪类</h2>
		<select class="select1">
			<option>111</option>
			<option selected>222</option>
			<option>333</option>
			<option>444</option>
		</select>
		<hr />
		<h4>应用：推荐默认</h4>
		<p><input type="radio" name="radio" id="a"/><label for="a">A</label></p>
		<p><input type="radio" name="radio" id="b" checked/><label for="b">B</label></p>
		<p><input type="radio" name="radio" id="c"/><label for="c">C</label></p>
	</body>
</html>
